---
title: "CVE-2024-0853\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2024-0853?format=md
keywords: index, follow
---

# CVE-2024-0853

Publication date 31 January 2024

Last updated 4 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/CVE-2024-0853?format=md#priority-reason )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2024-0853?format=md#impact-score)

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## Description

curl inadvertently kept the SSL session ID for connections in its cache
even when the verify status (\*OCSP stapling\*) test failed. A subsequent
transfer to
the same hostname could then succeed if the session ID cache was still
fresh, which then skipped the verify status check.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2024-0853?format=md#notes)

### Why is this CVE low priority?

Upstream Curl developers have rated this as being low severity

[Learn more about Ubuntu priority](https://ubuntu.com/security/cves/about#priority)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| curl | 24.04 LTS noble | Fixed 8.5.0-2ubuntu2 |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

only affects 8.5.0

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0853)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-0853)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-0853)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2024-0853)

### Other references

* <https://curl.se/docs/CVE-2024-0853.html>
* <https://www.cve.org/CVERecord?id=CVE-2024-0853>